292 lines
7.7 KiB
PHP
292 lines
7.7 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OC\Files\Cache;
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/**
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* Metadata cache for shared files
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*
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* don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
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*/
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class Shared_Cache extends Cache {
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private $storage;
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private $files = array();
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public function __construct($storage) {
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$this->storage = $storage;
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}
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/**
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* @brief Get the source cache of a shared file or folder
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* @param string $target Shared target file path
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* @return \OC\Files\Cache\Cache
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*/
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private function getSourceCache($target) {
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$source = \OC_Share_Backend_File::getSource($target);
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if (isset($source['path']) && isset($source['fileOwner'])) {
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\OC\Files\Filesystem::initMountPoints($source['fileOwner']);
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$mount = \OC\Files\Filesystem::getMountByNumericId($source['storage']);
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if (is_array($mount)) {
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$fullPath = $mount[key($mount)]->getMountPoint().$source['path'];
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list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($fullPath);
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if ($storage) {
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$this->files[$target] = $internalPath;
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$cache = $storage->getCache();
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$this->storageId = $storage->getId();
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$this->numericId = $cache->getNumericStorageId();
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return $cache;
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}
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}
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}
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return false;
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}
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public function getNumericStorageId() {
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if (isset($this->numericId)) {
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return $this->numericId;
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} else {
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return false;
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}
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}
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/**
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* get the stored metadata of a file or folder
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*
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* @param string/int $file
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* @return array
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*/
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public function get($file) {
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if ($file == '') {
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$data = \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_FILE_APP_ROOT);
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$etag = \OCP\Config::getUserValue(\OCP\User::getUser(), 'files_sharing', 'etag');
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if (!isset($etag)) {
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$etag = $this->storage->getETag('');
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\OCP\Config::setUserValue(\OCP\User::getUser(), 'files_sharing', 'etag', $etag);
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}
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$data['etag'] = $etag;
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return $data;
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} else if (is_string($file)) {
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if ($cache = $this->getSourceCache($file)) {
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return $cache->get($this->files[$file]);
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}
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} else {
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$query = \OC_DB::prepare(
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'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`,'
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.' `size`, `mtime`, `encrypted`'
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.' FROM `*PREFIX*filecache` WHERE `fileid` = ?');
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$result = $query->execute(array($file));
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$data = $result->fetchRow();
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$data['fileid'] = (int)$data['fileid'];
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$data['size'] = (int)$data['size'];
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$data['mtime'] = (int)$data['mtime'];
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$data['encrypted'] = (bool)$data['encrypted'];
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$data['mimetype'] = $this->getMimetype($data['mimetype']);
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$data['mimepart'] = $this->getMimetype($data['mimepart']);
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return $data;
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}
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return false;
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}
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/**
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* get the metadata of all files stored in $folder
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*
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* @param string $folder
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* @return array
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*/
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public function getFolderContents($folder) {
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if ($folder == '') {
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$files = \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_GET_FOLDER_CONTENTS);
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foreach ($files as &$file) {
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$file['mimetype'] = $this->getMimetype($file['mimetype']);
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$file['mimepart'] = $this->getMimetype($file['mimepart']);
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}
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return $files;
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} else {
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if ($cache = $this->getSourceCache($folder)) {
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return $cache->getFolderContents($this->files[$folder]);
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}
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}
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return false;
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}
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/**
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* store meta data for a file or folder
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*
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* @param string $file
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* @param array $data
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*
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* @return int file id
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*/
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public function put($file, array $data) {
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if ($file === '' && isset($data['etag'])) {
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return \OCP\Config::setUserValue(\OCP\User::getUser(), 'files_sharing', 'etag', $data['etag']);
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} else if ($cache = $this->getSourceCache($file)) {
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return $cache->put($this->files[$file], $data);
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}
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return false;
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}
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/**
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* get the file id for a file
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*
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* @param string $file
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* @return int
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*/
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public function getId($file) {
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if ($cache = $this->getSourceCache($file)) {
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return $cache->getId($this->files[$file]);
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}
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return -1;
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}
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/**
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* check if a file is available in the cache
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*
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* @param string $file
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* @return bool
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*/
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public function inCache($file) {
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if ($file == '') {
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return true;
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}
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return parent::inCache($file);
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}
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/**
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* remove a file or folder from the cache
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*
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* @param string $file
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*/
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public function remove($file) {
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if ($cache = $this->getSourceCache($file)) {
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$cache->remove($this->files[$file]);
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}
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}
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/**
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* Move a file or folder in the cache
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*
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* @param string $source
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* @param string $target
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*/
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public function move($source, $target) {
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if ($cache = $this->getSourceCache($source)) {
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$file = \OC_Share_Backend_File::getSource($target);
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if ($file && isset($file['path'])) {
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$cache->move($this->files[$source], $file['path']);
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}
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}
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}
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/**
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* remove all entries for files that are stored on the storage from the cache
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*/
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public function clear() {
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// Not a valid action for Shared Cache
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}
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/**
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* @param string $file
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*
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* @return int, Cache::NOT_FOUND, Cache::PARTIAL, Cache::SHALLOW or Cache::COMPLETE
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*/
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public function getStatus($file) {
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if ($file == '') {
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return self::COMPLETE;
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}
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if ($cache = $this->getSourceCache($file)) {
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return $cache->getStatus($this->files[$file]);
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}
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return self::NOT_FOUND;
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}
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/**
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* search for files matching $pattern
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*
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* @param string $pattern
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* @return array of file data
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*/
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public function search($pattern) {
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// TODO
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}
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/**
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* search for files by mimetype
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*
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* @param string $part1
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* @param string $part2
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* @return array
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*/
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public function searchByMime($mimetype) {
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if (strpos($mimetype, '/')) {
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$where = '`mimetype` = ?';
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} else {
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$where = '`mimepart` = ?';
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}
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$mimetype = $this->getMimetypeId($mimetype);
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$ids = $this->getAll();
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$placeholders = join(',', array_fill(0, count($ids), '?'));
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$query = \OC_DB::prepare('
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SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`
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FROM `*PREFIX*filecache` WHERE ' . $where . ' AND `fileid` IN (' . $placeholders . ')'
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);
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$result = $query->execute(array_merge(array($mimetype), $ids));
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return $result->fetchAll();
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}
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/**
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* get the size of a folder and set it in the cache
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*
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* @param string $path
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* @return int
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*/
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public function calculateFolderSize($path) {
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if ($cache = $this->getSourceCache($path)) {
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return $cache->calculateFolderSize($this->files[$path]);
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}
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return 0;
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}
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/**
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* get all file ids on the files on the storage
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*
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* @return int[]
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*/
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public function getAll() {
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return \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_File::FORMAT_GET_ALL);
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}
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/**
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* find a folder in the cache which has not been fully scanned
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*
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* If multiply incomplete folders are in the cache, the one with the highest id will be returned,
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* use the one with the highest id gives the best result with the background scanner, since that is most
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* likely the folder where we stopped scanning previously
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*
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* @return string|bool the path of the folder or false when no folder matched
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*/
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public function getIncomplete() {
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return false;
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}
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}
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